WebSphere Application Server - IBM Redbooks

Therefore, an input field declared in a JSP using Java code as:
can be replaced by a more elegant and efficient Struts tag:
with no need to explicitly refer to the Java bean from which the initial value is
retrieved. That is handled automatically by the JSP tag, using facilities provided
by the framework.
HTML documents
Although HTML documents generate only static content, you can use standard
HTML documents within your Struts application. Of course, they will not be able
to render any dynamic data, but they are still valid to use whenever the view is
static.
For example, a login page may just be an ordinary HTML document that invokes
a Strut login action.
Struts controller component
The most important Struts controller responsibilities are:
► Intercepting client requests
► Mapping each request to a specific business operation
► Collecting results from the business operation and making them available to
the client
► Determining the view to display to the client based on the current state and
result of the business operation
In the Struts framework, several components are responsible for the controller
duties and they can be classified in two parts: the action servlet and action
classes.
Action servlet
The Struts framework provides the org.apache.struts.action.ActionServlet class
for servlets. The action servlet bundles and routes HTTP requests from the client
(typically a user running a Web browser) to action classes and corresponding
extended objects, deciding what business logic function is to be performed, then
delegates responsibility for producing the next phase of the user interface to an
appropriate view component such as a JSP.
Chapter 12. Using Struts 387